/* Wait for spin lock */
static INLINE LONG slwait (volatile LONG *sl) {
while (interlockedexchange (sl, 1) != 0)
#ifndef FX_SMPBUILD // Faster not to sleep on multiprocessor machines
Sleep (0)
#endif
;
return 0;
}
// in newer compilers, the inline versions of these are used (in beast_atomic.h), but in
// older ones we have to actually call the ops as win32 functions..
long beast_interlockedexchange (volatile long* a, long b) noexcept { return interlockedexchange (a, b); }
/* Release spin lock */
static INLINE LONG slrelease (volatile LONG *sl) {
interlockedexchange (sl, 0);
return 0;
}
/* Try waiting for spin lock */
static INLINE LONG sltrywait (volatile LONG *sl) {
return (interlockedexchange (sl, 1) != 0);
}